Question 380435
Alex speed = xmph: distance = 270 miles
Stephanie speed = x+10 mph: 330 miles
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time Alex= time Stephanie
t=d/r
270/x=330/(x+10)
cross multiply
270(x+10)=330x
270x+2700=330x
330x-270x=2700
30x=2700
/30
x=90 mph : speed Alex
90+10 = 100 ... speed ... Stephanie
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m.ananth@hotmail.ca


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